La Junta, Skeelz, Sentinal, Junkz, Bangers Montana
If you are looking to use a clan for mono for the sake of reliability, i'd probably go with Junkz or Sentinal, since their bans won't effect mono play. As a rule of thumb, basically any clan now adays has enough cards for a powerful mono, so just use the following clan bonuses, which do not lose value for going mono -
+damage, +attack, -attack +power +life. Berserk can also be used mono since there are ways to work around the minimum of the bonus, although I would'nt recommend it with Lola banned.